Classification
519 - Probabilities & applied mathematics
982
330 - Economics
57
300 - Social sciences
27
515 - Analysis
15
570 - Life sciences; biology
15
530 - Physics
13
621 - Applied physics
12
006 - Special computer methods
10
004 - Data processing & computer science
9
005 - Computer programming, programs & data
9
658 - General management
7
003 - Systems
6
510 - Mathematics
6
512 - Algebra
6
518 - Numerical analysis
6
368 - Insurance
5
516 - Geometry
5
550 - Earth sciences
5
614 - Incidence & prevention of disease
5
020 - Library & information sciences
4
150 - Psychology
4
304 - Factors affecting social behavior
4
511 - General principles of mathematics
4
520 - Astronomy & allied sciences
4
620 - Engineering & allied operations
4
629 - Other branches of engineering
4
001 - Knowledge
3
301 - Sociology & anthropology
3
338 - Production
3
501 - Philosophy & theory
3
624 - Civil engineering
3
120 - Epistemology, causation & humankind
2
551 - Geology, hydrology & meteorology
2
610 - Medicine & health
2
616 - Diseases
2
910 - Geography & travel
2
100 - Philosophy & psychology
1
160 - Logic
1
170 - Ethics
1
324 - The political process
1
332 - Financial economics
1
333 - Economics of land & energy
1
363 - Other social problems & services
1
370 - Education
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
514 - Topology
1
526 - Mathematical geography
1
531 - Classical mechanics; solid mechanics
1
541 - Physical chemistry
1
more ...